EP0701878A1 - Dispositif et procédé de fabrication de tuyaux - Google Patents

Dispositif et procédé de fabrication de tuyaux Download PDF

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Publication number
EP0701878A1
EP0701878A1 EP95114363A EP95114363A EP0701878A1 EP 0701878 A1 EP0701878 A1 EP 0701878A1 EP 95114363 A EP95114363 A EP 95114363A EP 95114363 A EP95114363 A EP 95114363A EP 0701878 A1 EP0701878 A1 EP 0701878A1
Authority
EP
European Patent Office
Prior art keywords
blank
longitudinal
tube
clamping
longitudinal edges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95114363A
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German (de)
English (en)
Other versions
EP0701878B1 (fr
Inventor
Walter Lacher
Werner Schappacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weil Engineering GmbH
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Weil Engineering GmbH
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Filing date
Publication date
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Application filed by Weil Engineering GmbH filed Critical Weil Engineering GmbH
Publication of EP0701878A1 publication Critical patent/EP0701878A1/fr
Application granted granted Critical
Publication of EP0701878B1 publication Critical patent/EP0701878B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0535—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor longitudinal pipe seam alignment clamps

Definitions

  • the invention relates to a device and a method for producing pipes from thin-walled material, in particular from sheet metal, with a butt seam welding machine or the like for longitudinal seam welding and a clamping device for holding a possibly pre-shaped blank in the welding position, the clamping device clamping jaws in each case for the longitudinal edges of the blank.
  • Tensioning banks are already known for producing slow-welded pipes.
  • One of the longitudinal pipe edges to be welded is pressed against stops with manual support and held in this position by means of clamping jaws.
  • the second longitudinal edge is then also pressed by manual support against the already clamped edge and also clamped in this position.
  • This clamping technology is the usual and most common type of clamping technology in the area of larger pipe diameters and when the pipe diameter changes frequently. With such a bench, the production result largely depends on the skill of the operator. It is particularly problematic also when handling and clamping that an extremely gentle treatment, in particular of thin-walled pipes or the correspondingly thin sheets is required to avoid deformations and thus an excessive rejection.
  • Clamping tools are also already known which operate fully automatically and in which a rounded tube is pushed manually or automatically into the clamping tool, which is matched to the diameter of the tube.
  • the clamping tool also takes over the positioning of the rounded tube by means of clamping cylinders and clamping jaws, so that an automatic welding process can be initiated.
  • This type of clamping technology is mainly used in systems that only have to weld tubes with a constant diameter, especially for the household appliance industry and for example for dryers, washing machines, drums and the like.
  • the entire clamping tool must be replaced or the tool must be converted to the new pipe diameter to be welded in a complex manner.
  • the object of the present invention is a device of type mentioned at the outset and to create a method which, while avoiding the disadvantages described above and with little effort, can produce tubes of different diameters and should also be able to process very large tube diameter differences.
  • the usability should be simplified.
  • a holder for supporting the blank which is formed by at least one flexible traction element which engages under and holds the blank, and a part of the outer jacket which is then pre-bent in a groove-like manner, or which has such a pulling element is attached to holders located laterally next to the tube blank and adjustable in their spacing from one another.
  • a plurality of tension elements which are arranged next to one another in the longitudinal direction of the tube, are expediently provided and are in particular designed as tensioning straps.
  • the tension elements are each wound with one end on a reel connected to a winding drive and the other end of the tension elements is firmly connected to the holder. This simplifies the construction and nevertheless enables the intended mode of operation, in which the tube resting on the tension element can be positioned in height and can also be brought together with its longitudinal edges.
  • both ends of the tension elements are each wound on reels connected to winding drives.
  • the device has a tool carriage with the holder for the blank or the pipe, which can be moved in the longitudinal direction of the pipe relative to the butt weld machine.
  • the tool trolley can thereby be pulled out of a working position in the welding machine into a loading position and is then particularly easily accessible in this position for inserting a blank which is preferably preformed into a tube.
  • the clamping device expediently has a support for the longitudinal edges of the tube and clamping jaws which can be actuated separately from one another to act on the upper side of the longitudinal edges. This makes it possible to first clamp one longitudinal edge of the blank and then bring the other longitudinal edge to the clamped one and then also clamp it. The tube is then held in the welding position.
  • the invention also relates to a method for producing butt-welded longitudinally welded tubes from flat material, in particular from sheet metal blanks, the blanks being fed to a clamping device, held there and then welded.
  • This method is characterized in particular in that the blank is placed with its outer jacket on a flexible support held laterally by it, that the support is then lowered and the blank is pre-bent in a channel or tube shape and is increasingly wrapped around by the support and thereby the longitudinal edges of the blank are merged.
  • this makes it possible to produce pipes of different diameters without any problems, in particular replacing parts and complicated retrofitting in order to adapt to the different pipe diameters.
  • the longitudinal edges of the blank are moved against a stop engaging in the tube longitudinal gap with further bending of the blank and then clamped.
  • the longitudinal edges of the blank are aligned exactly in the longitudinal direction or in the welding direction and thus positioned exactly relative to the welding device.
  • An advantageous embodiment of the invention provides that the placing of the blank on the flexible support of one of the longitudinal edges of the blank is moved at the end against a stop engaging in the longitudinal tube gap and then clamped in that the other longitudinal edge of the blank is then pushed to the other side of the stop by one-sided clamping of the flexible support, the stop is removed and the movable longitudinal edge is pressed against the clamped longitudinal edge by further tensioning the flexible support and then clamped in this position and that the longitudinal pipe seam is then welded.
  • These process steps enable the pipe longitudinal edges to be positioned very precisely, and so it is possible to achieve joining gaps as well as vertical and horizontal positional accuracies that also meet high requirements, particularly in connection with laser welds.
  • a device 1 shown in FIG. 1 in an end view and in FIG. 6 in a side view is used to produce tubes from thin-walled material, in particular thin-walled sheet metal. It has a butt seam welding machine 2 for longitudinal welding of the tubes 3 with a tensioning device 4 for holding the tubes, and a holder 5 for supporting the sheet metal blank 6 or the preformed tube.
  • the holder 5 is located on a tool carriage 7 which can be moved in the longitudinal direction relative to the butt weld machine 2. This can be moved out of the butt weld machine by about the length of the tube to be produced and is mounted on longitudinal slide guides 8.
  • the holder 5 is used to support a possibly pre-bent or flat sheet metal blank and has this under-engaging and holding and partially wrapping the pre-shaped tube-shaped blank on the outer jacket Tension elements 9 on.
  • Tension elements 9 In the longitudinal direction of the pipe to be held, at least two tension elements 9 spaced apart from one another are preferably provided, which are in particular designed as tensioning straps.
  • the holder 5 also has side cheeks 10 which are adjustable in their spacing from one another as holders for the tension elements 9. At their upper ends there are deflections 11, over which the tension elements 9 are guided. The ends of the tension elements 9 are wound on reels 12 which are connected to winding drives.
  • winding drives are connected to a control, by means of which an exact positioning of both the length of the tension element sections located between the deflections 11 and a lateral positioning of the tension elements 9 is possible.
  • the reels 12 located on both sides can each be driven to the same extent, while different winding or unwinding movements are possible for positioning.
  • the reels 12 and also their angular drives are also located in the side cheeks 10 of the tool carriage 7. The spacing of the side cheeks 10 can also be changed, which can be clearly seen when comparing FIGS. 10 and 11.
  • winding drives for changing the length of the tension elements 9 other devices, for example linear drives or the like, can also be provided. In the assembly position shown in FIG.
  • the holder 5 is used outside the welding device 2 for receiving flat or tubular preformed sheet metal blanks and for feeding these held blanks in the correct position to the clamping device 4 located in the welding device. In addition, it also serves for the exact positioning of the longitudinal edges 13, 13a inside the clamping device 4. It is possible to process different pipe sizes without having to convert the device.
  • the recording and clamping process proceeds as follows:
  • the preformed tube indicated by dashed lines
  • the side cheeks 10 have moved apart, as can be seen in FIG. 1, and the tension elements 9 are wound up to a position determined for the respective pipe diameter, so that there is a somewhat increased support for the pipe 3.
  • the tubes 3 indicated by dashed lines and provided with directional arrows indicate that the tube 3 to be welded longitudinally can either be placed on the tension elements 9 from above or can also be inserted at the end.
  • the stroke of the tool trolley 7 is adjusted to the respective tube length via an adjustable end stop.
  • the wrapping of the tube by the tension elements 9 increases when lowering to almost 180 degrees, a previously existing, too large gap 14 being closed virtually automatically up to the gap width predetermined by the gap centering 15.
  • the tube 3 with its inner end resting on the support arm 17 is then pushed further onto the support arm 17 by moving the tool carriage 7 into the welding machine 2.
  • the clamping device 4 for clamping the longitudinal edges 13, 13a of the tube and a sword-like side stop 19 which engages between the clamping jaws 18, 18a (FIG. 7).
  • the tube 3 When the tube 3 is pushed into the clamping device 4, the tube is held in position by means of a feed aid 20 (FIG. 8).
  • This feeding aid fixes the longitudinal pipe edges upwards and in the lateral direction.
  • the feed aid 20 can be moved upwards in order to enable the welded tube to be extended later.
  • the tube 3 When the tube 3 is retracted with the help of the tool carriage 7, the tube 3 is pushed on the end face near the longitudinal edges 13, 13a against fixed stops 21, and with the aid of preferably pneumatically driven stops 22 on the axially opposite sides of the tube 3, a through the rounding caused axial offset can be compensated for, as indicated in FIG. 9.
  • the side walls 10 are synchronized via a gear, so that synchronous, opposite movements are present.
  • the respective clamping position ie the spacing of the side cheeks 10 from one another, depends on the respective tube diameter.
  • the length of the tension elements 9 is also regulated at the same time as the side walls 10 move.
  • the side stop 19, against which the two longitudinal edges 13, 13a rest, is then removed by swiveling it up (FIG. 14).
  • the gap that now exists between the longitudinal edges of the pipe must then be closed. This is done by unilaterally increasing the tensile force in the tension element 9, this being done on the left side in the exemplary embodiment so that the left longitudinal edge 13, which is held only slightly by the clamping jaw 18, can be pushed against the firmly clamped longitudinal edge 13a.
  • the friction between the tube 3 and the tension element 9 is generally so great that when the slightly clamped longitudinal edge 13 is pushed in, no sliding movement between the tube and the tensioning elements is possible.
  • the welding process can then be carried out using the welding method selected in each case.
  • the clamping force in the tension element 9 and also the clamping jaws 18, 18a can be released and the side cheeks 10 are moved apart into the position shown in FIG. 10.
  • the finished pipe then lies loosely on the tension elements 9.
  • the tool trolley 7 is then extended into the removal position and the finished tube 3 is taken along. The tube can then be removed backwards or upwards.
  • FIGS. 17 to 19 again illustrate the particular advantage of the present invention, namely the ability to produce pipes 3, 3a, 3b of different diameters with the same device 1 without the need for time-consuming retrofitting or replacement of parts. It is therefore also possible to economically manufacture smaller quantities of pipes of the same diameter.
  • a suitably programmable control there is also the possibility of producing tubes with different diameters in succession in alternation with particularly little effort.
  • sensors for detecting the size of the sheet metal blank 6 for the tube to be manufactured could also be provided.
  • Different welding methods can be used for longitudinal seam welding of the pipes, for example laser welding, TIG welding, plasma welding and the like.
  • the device according to the invention enables the production of tubes with very different diameters, with diameter ratios of 1 to 10 being able to be processed. This means that, for example, pipes with a diameter of less than 100 mm and pipes up to 10 times larger in diameter can be produced.
  • a common area of application for the device according to the invention is for pipe diameters between 100 mm and 600 mm. The adaptation to these different diameters takes place practically automatically with the aid of the reel winding drives and also the distance adjustment of the side cheeks 10.
  • the device 1 according to the invention enables the tubes or their longitudinal edges 13, 13a to be clamped very precisely, with joining gaps of less than 0.1 mm and positional accuracy in the vertical direction of +/- 0.1 mm and in the horizontal direction of +/- 0.05 mm can be realized.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
EP95114363A 1994-09-14 1995-09-13 Dispositif et procédé de fabrication de tuyaux Expired - Lifetime EP0701878B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4432674 1994-09-14
DE4432674A DE4432674C1 (de) 1994-09-14 1994-09-14 Vorrichtung und Verfahren zum Herstellen von Rohren

Publications (2)

Publication Number Publication Date
EP0701878A1 true EP0701878A1 (fr) 1996-03-20
EP0701878B1 EP0701878B1 (fr) 1999-08-11

Family

ID=6528162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114363A Expired - Lifetime EP0701878B1 (fr) 1994-09-14 1995-09-13 Dispositif et procédé de fabrication de tuyaux

Country Status (2)

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EP (1) EP0701878B1 (fr)
DE (2) DE4432674C1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1632307A2 (fr) * 2004-09-02 2006-03-08 Elpatronic Ag Méthode et appareil pour soudage par recouvrement de tôles tubulaires
WO2006034773A1 (fr) * 2004-09-24 2006-04-06 Thyssenkrupp Steel Ag Procede et dispositif pour produire un profile creux a soudure longitudinale
US8042368B2 (en) 2004-08-25 2011-10-25 Thyssenkrupp Steel Ag Method and apparatus for the production of a longitudinal seam welded hollow profile
US20150314395A1 (en) * 2012-12-12 2015-11-05 Berndorf Band Gmbh Method for producing an endless belt
CN105290695A (zh) * 2015-10-31 2016-02-03 安新生 钢环的焊接工装
CN113351785A (zh) * 2021-06-08 2021-09-07 浙江传播者金属装饰材料有限公司 一种钢管冲压成型装置
CN114309949A (zh) * 2022-01-13 2022-04-12 大匠激光科技(苏州)有限公司 一种圆管激光焊接装置
CN114378409A (zh) * 2021-12-22 2022-04-22 福建易辰达机械有限公司 一种圆筒氩弧焊接装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19827798A1 (de) * 1998-06-23 1999-12-30 Thyssenkrupp Stahl Ag Verfahren und Vorrichtung zum Herstellen von längsnahtgeschweißten Rohren aus ebenen Blechzuschnitten
KR100675995B1 (ko) 1998-11-13 2007-01-29 엘파트로닉 아게 관의 용접 방법 및 그 용접 방법을 수행하는 장치
US6495792B1 (en) 1998-11-13 2002-12-17 Elpatronic Ag Method and device for positioning edges, especially in tube welding
DE102004039577B3 (de) 2004-08-14 2006-02-02 Weil Engineering Gmbh Vorrichtung zum Herstellen von Rohren
DE102006027046B3 (de) * 2006-06-10 2007-11-22 Lemuth Gmbh Verfahren und Vorrichtung zum Herstellen eines Rohres
DE102007018387B4 (de) 2007-04-17 2014-09-04 Weil Engineering Gmbh Durchlaufschweißmaschine zum Verschweißen eines Rohrrohlings
DE102007025043B4 (de) 2007-05-29 2016-02-18 Schnelldorfer Maschinenbau Gmbh Vorrichtung zum Herstellen von Rohren aus dünnwandigem Material
US20160136703A1 (en) 2013-07-08 2016-05-19 Andritz Soutec Ag Method for producing annular parts and use of said method
DE102013013762B4 (de) 2013-08-19 2015-06-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Formdorn mit einem biegeelastisch verformbaren Druckmantel sowie Umformvorrichtung mit einem solchen Formdorn
DE102013220179B4 (de) * 2013-10-07 2015-06-25 Siemens Aktiengesellschaft Verfahren zur Herstellung von Behälterteilen für gekapselte Schaltanlagen und gekapselte Schaltanlage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2002015A1 (de) * 1970-01-17 1971-07-22 Heitze Deuzer Maschf Vorrichtung zum Laengsschweissen von rohrfoermigen Werkstuecken
US3934324A (en) * 1975-02-14 1976-01-27 Grotnes Machine Works, Inc. Method and apparatus for forming automotive wheel rim blanks
FR2380102A2 (fr) * 1977-02-14 1978-09-08 Spisak Edward Machine de soudage
DE3113769C1 (de) * 1981-04-04 1982-10-28 August Wilhelm 5901 Wilnsdorf Schäfer Vorrichtung zum Ausrichten sowie Halten eines Rohrschusses und zum nachfolgenden Längsverschweißen stoßender freier Randbereiche
JPS59107776A (ja) * 1982-12-14 1984-06-22 Nippon Arm Kogyo Kk 金属管溶接時の開先部の圧締方法
US4747289A (en) * 1984-02-07 1988-05-31 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Method of forming seam-welded tubes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031825A1 (de) * 1989-10-13 1991-05-08 Cefin Spa Perfektioniertes verfahren zum kontinuierlichen schweissen von zylindrischen dosenkoerpern und eine entsprechende maschine zur durchfuehrung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2002015A1 (de) * 1970-01-17 1971-07-22 Heitze Deuzer Maschf Vorrichtung zum Laengsschweissen von rohrfoermigen Werkstuecken
US3934324A (en) * 1975-02-14 1976-01-27 Grotnes Machine Works, Inc. Method and apparatus for forming automotive wheel rim blanks
FR2380102A2 (fr) * 1977-02-14 1978-09-08 Spisak Edward Machine de soudage
DE3113769C1 (de) * 1981-04-04 1982-10-28 August Wilhelm 5901 Wilnsdorf Schäfer Vorrichtung zum Ausrichten sowie Halten eines Rohrschusses und zum nachfolgenden Längsverschweißen stoßender freier Randbereiche
JPS59107776A (ja) * 1982-12-14 1984-06-22 Nippon Arm Kogyo Kk 金属管溶接時の開先部の圧締方法
US4747289A (en) * 1984-02-07 1988-05-31 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Method of forming seam-welded tubes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 227 (M - 332) 18 October 1984 (1984-10-18) *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8042368B2 (en) 2004-08-25 2011-10-25 Thyssenkrupp Steel Ag Method and apparatus for the production of a longitudinal seam welded hollow profile
EP1632307A2 (fr) * 2004-09-02 2006-03-08 Elpatronic Ag Méthode et appareil pour soudage par recouvrement de tôles tubulaires
EP1632307A3 (fr) * 2004-09-02 2006-10-11 Elpatronic Ag Méthode et appareil pour soudage par recouvrement de tôles tubulaires
WO2006034773A1 (fr) * 2004-09-24 2006-04-06 Thyssenkrupp Steel Ag Procede et dispositif pour produire un profile creux a soudure longitudinale
CN101065197B (zh) * 2004-09-24 2010-12-22 蒂森克虏伯钢铁股份公司 用于制造纵向接缝焊接的空心型材的方法和装置
US7909226B2 (en) 2004-09-24 2011-03-22 Thyssenkrupp Steel Ag Device for producing a longitudinally welded hollow profile using a holding-down device
US20150314395A1 (en) * 2012-12-12 2015-11-05 Berndorf Band Gmbh Method for producing an endless belt
CN104918722B (zh) * 2012-12-12 2016-12-14 百德福钢带有限公司 用于制造环形带的方法
US9539669B2 (en) * 2012-12-12 2017-01-10 Berndorf Band Gmbh Method for producing an endless belt
CN105290695A (zh) * 2015-10-31 2016-02-03 安新生 钢环的焊接工装
CN113351785A (zh) * 2021-06-08 2021-09-07 浙江传播者金属装饰材料有限公司 一种钢管冲压成型装置
CN113351785B (zh) * 2021-06-08 2022-06-28 浙江传播者金属装饰材料有限公司 一种钢管冲压成型装置
CN114378409A (zh) * 2021-12-22 2022-04-22 福建易辰达机械有限公司 一种圆筒氩弧焊接装置
CN114309949A (zh) * 2022-01-13 2022-04-12 大匠激光科技(苏州)有限公司 一种圆管激光焊接装置

Also Published As

Publication number Publication date
EP0701878B1 (fr) 1999-08-11
DE59506572D1 (de) 1999-09-16
DE4432674C1 (de) 1996-02-22

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